Observations of the Fortnightly Nutation Terms and the Dynamical Variation of Latitude with Photographic Zenith Tubes

Abstract

Observations made with three photographic zenith tubes show fortnightly nutation terms in good agreement with values determined from Earth tide observations. The radius of the circular "dynamical variation of latitude" occurring with the argument (alpha-2L) is found to be less than the rigid Earth values.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1976
Accession Number
ADA606713

Entities

People

  • Dennis D. Mccarthy

Organizations

  • United States Naval Observatory

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Agreements
  • Amplitude
  • Coordinate Systems
  • Earth Models
  • Earth Tides
  • Frequency
  • Grids
  • Grids (Coordinates)
  • Information Operations
  • Latitude
  • Longitude
  • New York
  • Observation
  • Observatories
  • Ocean Tides
  • Rotation

Readers

  • Space Exploration and Orbital Mechanics.